Rotary engine.



F. W. REMBR.

ROTARY ENGINE.

` APPLIGATION FILED AUG. 17. 190s.

F.- W. KEMER. ROTARY ENGINE. APPLIOATION Pimm AUG. 17. 190e.

910,085. Patented Jan. 19, 1909.

2 SHEETS-SHEET Z.

'il SAE FATEN OFFQE.

FREDRIOK WILLIAM REMER, OF LAWTON, OKLAHOMA.

ROTARY ENGINE.

To all whom it may concern:

Be it known 4that l', innoiiioii W. Ruinen, a citizen of the United btates, residing at Lawton, in the county of Comanche and State of Oklahoma, have invented a new and useful Rotary Engine, of which the following is a specification.

This invention relates to rotary engines and the principal object thereof 1s to provide an improved general construction for such an engine.

Another object of the invention is to provide an improved valve gear and cut-ofi' i'or use with an engine of this type.

A still further object of the invention is to provide an improved construction of the rotor to be used in such an engine.

`With the above and other objects in view the invention consists in general of a cylindrical casing provided at one end with a steam chest and at the other end with an exhaust chest, an improved form of valve held in the steam chest, a rotor mounted within the cylindrical portion of the casing and eccentric thereto, and an impeller blade pivotally mounted on the rotor, said rotor and impeller blade being of special and improved construction.

The invention further consists in certain novel arrangements of parts and combinations of details hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and -Figure 1 is a longitudinal section through an engine constructed in accordance with this invention, certain portions being shown in elevation. Fig. 2 is a transverse section through the center of the cylinder and rotor. Fig. 3 is an elevation of the steam end of the engine. Fig. 4i is a transverse section through the steam chest showing the valve and valve gear. Fig. 5 is a det-ail perspective view of the impeller blade.

The casing of this engine comprises a cylindrical portion 10 having a pair of heads attached thereto. One of these heads, indicated at 11, is secured to the steam end of the casing. Eccentrically located on the head 11 is a steam chest 12, provided with a steam connection 13 near the periphery thereof and preferably at the top portion.

Specification of Letters Patent.

Application filed August 17, 1908.

Patented Jan. 19, 1909.

serial No. 448,910.

formed to the steam chest 12 and provided with a connection 18 for an exhaust pipe. This exhaust chest is also provided with a bearing 19 and stufiing box 20 similar to the bearing and stuffing box in the steam chest. The joints between these heads and the cylindrical portion of the casing are rabbeted as indicated at 21, and bolts 22 serve to firmly hold the heads upon the cylinder.

A shaft 23 is supported in the bearings 14 and 19, and a rotor is firmly secured to this shaft. The body of the rotor comprises a pair of heads, 24 located at the steam end, and 25, located at the exhaust end. These heads are so shaped and proportioned as to closely fit within the openings of the steam and exhaust chests respectively. Between these heads extends an outer wall comprising an arcuate portion 26, the outer face of which is co-terminate with a portion of the peripheries of the heads and a concave arcuate portion 27.` This concave arcuate portion forms substantially a trough extending longitudinally of the rotor, the rotor ends forming the end walls of the trough. One edge of this trough is cut away as indicated at 28 for purposes hereinafter to be decribed. This arcuate trough 27 is so proportioned that a bearing 29 may be formed in each of the ends of the rotor concentric to the arc ofthe trough. Centrally disposed between the end walls is a shaft journal 30 arranged to receive the shaft 23. A wall 31 extends from the outer wall 26 to the journal 30 and serves to divide the hollow rotor into two chambers of which 32 is a steam chamber and 33 an exhaust chamber. A port 34 is formed in the head 24 and leads from the steam chest 12 to the steam chamber 32. A similar, but larger, port 35 extends through the head 25 from the exhaust chamber 35 tothe exhaust chest 17. A steam port 36 leads from the steam chamber 32 into the trough extension 2S and an exhaust port 37 leads from the opposite edge of the trough into the exhaust chamber 33.

For the purpose of actuating the rotor, there is provided a crescentic impeller blade 38 having journals 39 at each end, said journal being supported in the bearings 29. This impeller blade is journaled at such a point that one end of the blade will be constantly in contact with the inner periphery of the arcuate wall 27, while the other end is at a greater distance from the pivot point and contacts with the cylindrical portion 10 of the casing. This impeller blade is further arranged so that it may lie, during certain portions of the revolution of the rotor, entirely within t-he trough as indicated in dotted lines in F ig. 2. Vhen in this position the shorter arm of the impeller blade is arranged to cover the exhaust port 37, while the edge of the longer arm lies in the portion 28 of the trough.

In order to make a steam tight joint between the impeller blade and the trough bottom, there is provided in the blade a channel 41 having a number of sockets 42 along the vbottom thereof. lVithin the channel 4l is held a packing strip 43 provided with lugs 44 arranged to fit the socket 42. Tn order to prevent the escape of steam around the ends of the impeller blade, similar channels are made in these ends and packing strips 45 of similar character are held therein. Coiled or other suitable springs are held behind the packing strips and serve to force them out- Y wards against the surfaces on which they are intended to bear.

1n order to prevent the escape of steam from the steam chest into the space between the rotor and the casing walls, as well as to prevent the escape of steam from this space into the exhaust chest, the ends of the rotor are rabbeted as at 4G and the respective steam and exhaust chests are rabbeted as at 47. Nithin these rabbets are held packing rings 48, these rings being retained in position by means of follower plates 49 secured to the heads by bolts 50.

Turning now to a consideration of the peculiar valve mechanism used in connection with this invention, there is formed on the inner ends of the bearings 14 an eccentric portion 51 whereon is mounted a cut-o plate 52. This plate is in t-he form of a onestep cam, the line joining the points of the curved ends being radial to the center of the cam and the curves immediately adjacent said lines merging from the ends of the lines into the circular arc having its center at the center of the cam. This cam is so proportioned that it will alternately permit the port 34 to open and close as the rotor moves around. From the plate 52 a sleeve 53 extends upward surrounding the eccentric portion of the bearings and rigidly formed or attached to this sleeve is a ear 54 eccentric with the axis of the bearlng 14. Meshing with the gear 54 is a pinion 55 carried on a shaft 56 which projects outward through the steam chest 12,

thus cause the port 34 to open and close at.. j'

an earlier or later period7 depending `on the direction in which the handle is moved.

Now in order to understand the operation of the device, let it be assumed that the conn nection 13 has been properly joined to a source of steam supply, such as a boiler or the like, and that the steam has been turned on. The valve plate 52 is adjusted for the desired cut off. Steam will now enter the steam chest and pass through the port 34 into the chamber 32. Supposing that the parts are in the position indicated by full' lines in Fig. 2, the steam will press against the impeller blade and cause the rotor to rotate. Tn-

asmuch as the portion of the impeller blade nals 39 are at the top of the ligure. As the im peller` blade passes this point the pressure within the trough will force the portion of said blade of greater area outward and cause the same to assume positions varying from that of the dotted line to that of the full line in Fig. 2. Meanwhile the steam held in the space to the right of that ligure is allowed to escape through the exhaust port 37, exhaust chamber 33, end exhaust port 35 and into t-he exhaust chest 17 from which it escapes through the connection 1S, either into the atmosphere or to a pipe leading thereto. If, at any time during the operation of the device, it be desired to change' the cut-oil', it is simply necessary to move the handle 59 in the proper direction and the cut-oli'l may be charged without interfering with the main steam supply. It will be noted that when the impeller blade is in the position shown in dotted lines, the exhaust port 37 is closed and therefore no steam can escape across the trough and out said port.

It is obvious that many minor changes may be made in the form and proportions of this invention, and it is not therefore desired to confine the same tothe exact form herein shown and described, but it is wished to include all such as properly come within the scope thereof.

Having thus described the invention, what is claimed as new, is

l. In a rotary engine, a hollow rotor having a trough formed longitudinally on the exterior thereof and provided with internal steam and exhaust chambers, said rotor having a steam inlet port at the end of the steam chamber and a lateral steam outlet port opening from the said chamber to the said trough, and further having an exhaust inlet port from said trough to the exhaust chamber, and an exhaust outlet port opening from said exhaust chamber to the end of the rotor opposite the steam inlet end, and a swinging impeller blade journaled within said trough near the periphery of the' rotor.

2. In a rotary engine, a casing provided with oppositely disposed steam and exhaust chests, a shaft extending through said casing eccentric thereof, a hollow rotor concentric with said shaft provided with a trough extending longitudinally of its exterior', said rotor contacting with the inside of said casing along a line, a wall in said rotoi dividing the interior into two chambers, one of which has a steam inlet port at one end and a steam outlet port extending from the chamber to the trough, the other having similar exhaust ports, a rocking impeller blade pivotally mounted on said rotor in the trough, and a valve held in said steam chest to control t-he point of cut-off.

3. In a rotary motor, a rotor provided with internal steam and exhaust chambers, and an external recess, said chambers being provided with inlet and outlet ports, and ports leading to the recess, and an impeller blade pivotally mounted in the recess between the ports leading thereto, and adapted. to be alternately housed in the recess and to be projected therefrom, the port leading from the recess to the exhaust chamber being closed by said blade when it is housed.

4. In a rotary motor, a casing having an inlet at one end, and an exhaust at the opposite end, a rotor working in the casing, and having internal steam and exhaust chambers, and a port in one end, to establish communication between the aforesaid inlet and the steam chamber, and a port in the opposite end, to establish communication between the exhaust and the exhaust chamber, and said rotor having a longitudinally extending recess, provided with ports, communicating respectively with the steam and the exhaust chambers of the rotor, and an impeller blade pivotally mounted in the recess.

5. In a rotary motor, a casing having an inlet at one end, an exhaust at the opposite end, a rotor working in the casing, and having internal steam and exhaust chambers, and a port in one end to establish communication between the aforesaid inlet and the steam chamber, and a port in the opposite end, to establish communication between the exhaust and the exhaust chamber, and said rotor having a longitudinally extending recess provided with ports communicating respectively with the steam and the exhaust chambers of the rotor, and a blade pivotally mounted in the recess between said ports, and adapted to alternately house in the recess, and to be projected therefrom, the port connecting the recess with the exhaust chamber of the rotor being controlled by said blade.

In testimony that I claim the foregoing as my own, I have hereto ailixed my signature in the presence of two witnesses.

FRED. W'ILIJIAM REMER.

Vitnesses:

W. M. SMITH, SULU REMER. 

